Long Division Calculator
Long division worked out step by step, as you would write it.
Repayment Calculator
How long a debt takes to clear at the payment you can make.
Everything above the monthly interest goes straight to principal, so small increases shorten the term disproportionately.
—
| Payment | Months to clear | Total interest | Saved vs current |
|---|
Time to clear
—
Payoff date—
Total interest—
Total repaid—
Interest as % of balance—
First month interest—
First month principal—
Minimum viable payment—
Quick Tool Overview
The Repayment Calculator answers the practical question: at the payment I can afford, how long until this debt is gone and what will it have cost? It also checks whether the payment exceeds the monthly interest at all, which on high-rate debt is not guaranteed.
- What it does
- Calculates payoff time and total interest from a payment you choose
- You give it
- A balance, a rate and a monthly payment
- You get back
- Months to clear, the payoff date and the total interest
- Best for
- Planning a payoff around what you can actually afford
About the Repayment Calculator
Enter what you owe, the interest rate and the amount you can pay each month, and the calculator returns the number of months until the balance reaches zero, the payoff date and the total interest you will have paid by then.
It also does the thing that matters most on high-rate debt: it checks whether your payment actually exceeds the monthly interest. Below that threshold the balance grows no matter how long you pay, and the calculator says so rather than returning a misleading number. Above it, small increases in payment have a disproportionate effect, because everything above the interest goes straight to principal — so the payoff slider is worth moving before you settle on a figure.
Key features of the Repayment Calculator
Payoff date calculated
A calendar date rather than a count of payments, which is easier to plan against.
Never-ending debt detected
If the payment cannot cover the interest, the balance grows forever — and you are told the minimum that works.
Small increases, large effect
Everything above the interest goes straight to principal, so nudging the payment shortens the term disproportionately.
Real monthly compounding
Interest is applied to the remaining balance each month, not approximated with simple interest.
Total interest reported
The cost of taking the slow route, stated plainly next to the fast one.
How to use the Repayment Calculator
-
1
Enter the balance and rate
What you currently owe and the annual interest rate charged on it.
-
2
Enter your monthly payment
The amount you can realistically pay every month without missing one.
-
3
Read the payoff time
Months to clear, the payoff date and the total interest paid along the way.
-
4
Nudge the payment up
Small increases shorten the term disproportionately, because the extra all goes to principal.
Frequently asked questions
From the amortization formula rearranged for the number of payments, which needs a logarithm. It works out how many fixed payments are required to reduce the balance to zero at that interest rate.
If the payment is less than the monthly interest, the balance rises every month and the debt never ends. The calculator detects this and tells you the minimum payment that would start reducing it.
Because the interest portion is fixed by the balance, everything you pay above it goes entirely to principal. Increasing the payment by ten percent can cut the term by far more than ten percent.
Yes, interest is applied monthly to the remaining balance, so the schedule reflects real compounding rather than a simple interest approximation.
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